Supportive Dee was in Sin City to support her long-term boyfriend as he took on the Brazilian fighter Jose Aldo - calling The Notorious "the true definition of a champion" following his record-breaking win.

It comes as McGregor directed a sensational verbal onslaught at Floyd 'Money' Mayweather, saying that he was now the 'king' and that in a no rules fight he would be the winner.

The feud between Mayweather and McGregor first started when Mayweather claimed that McGregor "was evidence that racism still existed," citing the fact that the UFC star has been praised for trash talking, while he has been branded "cocky and arrogant" for doing the same.

Confident: McGregor enjoyed a shop at Versace with his friends (Photo: AKM-GSI-XPOSURE)

Green: The Irishman dressed in the colour of his country (Photo: AKM-GSI-XPOSURE)

Speaking after the press conference on Wednesday, McGregor was asked what he made of Mayweather accusations and the fired up Irishmen didn't mince his words.

“Eh, it is what it is, but don’t put my name in something like that. I didn’t take too kindly to that," said McGregor.

"What he’s speaking rings true in many ways, but it has nothing to do with me or my success. Like I said, I'm dressed like El Chapo in his prime, I'm running this company like half a wise guy."

"Even up there [onstage at the press conference], I have been influenced by his culture also, I have been influenced by man cultures.